Abstract: Photographic elements, diffusion transfer assemblages and processes are described which employ a novel nondiffusible compound having a releasable 6-arylazo-3-pyridinol magenta dye moiety or precursor thereof having the formula: ##STR1## wherein: (a) R represents hydroxy or amino;(b) R.sup.1 represents hydrogen, a hydrolyzable moiety or CAR;(c) G represents carboxy; a hydrolyzable ester or a sulfamoyl group;(d) CAR represents a ballasted carrier moiety capable of releasing the diffusible 6-arylazo-3-pyridinol dye moiety or precursor thereof under alkaline conditions; and(e) n is 0, 1 or 2, with the proviso that when n is 0, then R.sup.1 is CAR.

Abstract: A reflective laser recording and data storage medium, for direct reading after writing, formed from a photosensitive silver-halide emulsion wherein a surface latent image exposure on the recording area forms a depthwise gradient of silver nuclei. A single step negative silver diffusion transfer process is used to develop silver nuclei of the latent image and dissolve unexposed silver halide elsewhere, forming silver ion complexes. These complexes are transported by diffusion transfer to the developing silver nuclei sites where silver is precipitated and adsorbed to form a high concentration of non-filamentary particles at a surface of a low melting temperature dielectric colloid matrix which is highly reflective of light and electrically non-conducting.

Abstract: There are disclosed diffusion transfer color processes and products which employ novel image dye-providing materials which provide image dyes having the chromophoric system represented by the formula ##STR1## wherein A is ##STR2## X is H, alkyl, aryl or substituted aryl; W is H or alkyl, R is H or alkyl; m and n are each integers of from 2 to 6.The image dye-providing material includes a diffusion control moiety such as a hydroquinonyl group and may be diffusible or nondiffusible as a function of the diffusion control moiety.

Abstract: In a photographic element for the color diffusion transfer process having a neutralizing system comprising a neutralizing layer and a timing layer, the improvement which comprises said timing layer containing a mixture of acetyl cellulose and a polymer represented by the general formula (I): ##STR1## wherein A represents a repeating unit represented by the general formula (II): ##STR2## wherein R.sub.2 represents a hydrogen atom, a halogen atom, or a methyl group; R.sub.3 represents a hydrogen atom, a halogen atom, an alkyl group, an aryl group, ##STR3## R.sub.4 represents an alkyl group or an aralkyl group; R.sub.5 and R.sub.6, which may be the same or different, each represents an alkyl group, an aryl group, or an aralkyl group; and a represents 0 or 1; R.sub.

Abstract: In a photographic film unit having a pair of sheets connected in superposition with a photosensitive layer located between the sheets, a container carrying a quantity of fluent processing composition is arranged to provide for the discharge of the composition to between the sheets. A fluid receiver or trap is provided at the opposite edge of the sheets to receive and store excess processing composition after it has been spread between the sheets. The improvement comprises a trap construction wherein an intermediate sheet, which is disposed between the pair of sheets and is coupled to both of them, extends from between the pair of sheets at the trailing end thereof and is folded around one of the sheets at that end to form a trap cover over the trap volume between that folded portion and the outside surface of that one sheet. Spacing elements are formed by embossing the trailing end of that one sheet and fluid flow slits are formed by slitting the trailing edge of that sheet.

Abstract: A dye image-receiving layer in a diffusion transfer image-receiving sheet comprises a novel mordant polymer which is a copolymer of 4-vinylpyridine, a monomer containing at least 2 ethylenically unsaturated groups and a monomer containing an .alpha.,.beta.-ethylenically unsaturated group. The polymer has excellent film-forming properties without the use of a solvent and does not require any film hardener.

Abstract: Said material contains a quinone-type compound which corresponds to one of the formulae (A) or (B) and which is capable in reduced state and under alkaline conditions of releasing a photographically useful group e.g. a dye: ##STR1## wherein: each of (Nuox).sup.1 and (Nuox).sup.2 represents an oxidized nucleophilic group,Z represents a bivalent atomic group which is electronegative,Q together with the Z group represents a releasable photographically useful group,each of R.sup.1, R.sup.2 and R.sup.3 is hydrogen, halogen, alkyl, alkoxy, or an acylamino group or R.sup.1 and R.sup.2 in adjacent positions on the ring form a ring fused with the remainder of the molecule, or R.sup.2 and R.sup.3 together are fused with the remainder of the molecule.each of R.sup.4 and R.sup.5 represents hydrogen or a hydrocarbon group.At least one of the substituents R.sup.1, R.sup.2, R.sup.3, R.sup.4 or R.sup.5 is a ballasting group X.

Abstract: An apparatus for flamescarfing the surface of a workpiece includes a powder supply device having a powder container connected via a shut-off valve to a powder distributor which is connected via hoses with nozzles mounted on the flamescarfing burner.

Abstract: Cyan azo dye-providing compounds have the formula: ##STR1## wherein: R.sup.1 is selected from the group consisting of aryl, alkyl or NR.sup.11 R.sup.12 wherein R.sup.11 is alkyl or aryl and R.sup.12 is alkyl, or R.sup.11 and R.sup.12, taken together with the nitrogen atom to which they are attached, is a heterocyclic group;X is --CO-- or --SO.sub.2 --;R.sup.3 is --COOH or --CAR and is attached in the meta or para position to X in the benzene ring;R is alkyl; ##STR2## or can be taken together with R and the nitrogen atom to which it is attached to form a heterocyclic ring unsubstituted or substituted with a carboxy group; andCAR is a carrier moiety which, as a function of oxidation under alkaline conditions, releases a diffusible dye, with the proviso that the compound contains at least one CAR group and, excepting when R and R.sup.2 form a heterocyclic group and X is --SO.sub.2 --, must contain at least one carboxy group.

Abstract: A photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer and an outermost layer thereof containing gelatin and colloidal silica prepared by adding potassium hydroxide to an aqueous dispersion of colloidal silica and a method of improving the antiadhesive property of a photographic light-sensitive material which comprises incorporating colloidal silica prepared by adding potassium hydroxide to an aqueous dispersion of colloidal silica into an outermost layer containing gelatin of a photographic light-sensitive material.

Abstract: A process for the production of a phase hologram of tanned gelatin in a gtin matrix from silver halide photographic material is disclosed in which the silver halide photographic material is exposed, developed with a non-tanning developer, bleached with a tanning bleach which removes the metallic silver of the metallic silver image areas while tanning the gelatin in the metallic silver image areas, and is fixed with a non-tanning fixing agent to remove the silver halide from the photographic material.

Abstract: Non-diffusible thioether compounds capable of releasing, on reaction with color developer oxidation compounds, a diffusible silver halide development inhibitor without at the same time forming permanent dyes to any substantial extent are characterized by containing a group of the formula ##STR1## or its tautomeric form, wherein Z.sup.1 represents an electron attracting substituent and X represents an aliphatic, aromatic or heterocyclic group that if released together with the sulfur atom, forms a diffusible silver halide development inhibiting mercaptane.

Abstract: Novel yellow ortho, ortho' dihydroxy azomethine dyes and metal complexes of such dyes which are particularly useful in photographic products and processes are presented by this invention. The novel yellow ortho, ortho' dihydroxy azomethine dyes have the following structural formula: ##STR1## WHERE N' IS THE INTEGER 1-8 AND M' IS THE INTEGER 1 OR 2.

Abstract: A silver halide light-sensitive material in which a silver halide light-sensitive emulsion layer is provided on a support permanently provided with a spectral reflectance of about 25% or less in the light-sensitive wavelength region of the silver halide light-sensitive emulsion layer. A method of utilizing the same in a diffusion transfer process is also disclosed.

Abstract: The present invention relates to novel bicyclic compounds useful as photographic silver halide developing agents, to the preparation of these compounds and to photographic products, processes and compositions employing the same. The subject compounds may be represented by the formula ##STR1## wherein R.sub.1 and R.sub.2, the same or different, each represents hydrogen, a hydrocarbon moiety, preferably an alkyl group, --COOH or --COOR.sup.1 wherein R.sup.1 is an alkyl group; R.sub.3 and R.sub.4, the same or different, each represent hydrogen or an alkyl group, R.sub.5 represents hydrogen or --COR.sup.2 wherein R.sup.2 is an alkyl group; R.sub.6 represents hydrogen when R.sub.5 is hydrogen and represents hydrogen or --OCOR.sup.3 wherein R.sup.3 is an alkyl group the same as R.sup.2 when R.sub.5 represents --COR.sup.2 ; X represents --OH, --NH.sub.2 or --NHCOR.sup.4 wherein R.sup.4 represents an alkyl group the same as R.sup.2 ; Y represents --OH or --OCOR.sup.5 wherein R.sup.

Abstract: A dye-releasing mechanism is described which employs a nondiffusible dye-releasing compound having a dye or dye-precursor moiety attached thereto through a sulfonamido cleavage linkage so that a diffusible sulfonamide dye or dye-precursor will be released upon oxidation and subsequent alkaline hydrolysis of the compound.

Abstract: There is disclosed an improvement in a diffusion transfer photographic material having a transparent support, a receiving layer, a silver halide emulsion layer, and a neutralization layer, wherein the neutralization layer contains a copolymer containing fluorine.

Abstract: A novel class of redox releasing compounds contains an N,N-disubstituted carbamoyl ballast group. These compounds can be used in photographic elements and processes to release a dye or other photographically useful group as a function of silver halide development.

Abstract: A dye mordant composition containing a polymer comprising repeating units with at least 20 mol % of the repeating units having the general formula (I): ##STR1## wherein R.sub.1 represents an alkyl group containing 1 to 12 carbon atoms, an aralkyl group, an aryl group or an allyl group; R.sub.2 and R.sub.3, which may be the same or different, each represents a hydrogen atom, an alkyl group, an aralkyl group, an aryl group or an allyl group, where the total number of carbon atoms contained in the main chain and/or ring of R.sub.2 and R.sub.3 is less than 16; n represents an integer from 2 to 20; and X.sup..crclbar. represents an anion.

Abstract: A color photographic light-sensitive material comprising a support having thereon at least one layer of a silver halide photographic emulsion with the light-sensitive material containing at least one hydroquinone compound represented by the following general formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom, ##STR2## or a precursor thereof.